OSG65R099HZ MOSFET for Crypto Miner Power Supply Unit
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OSG65R099HZ 650V N-Channel MOSFET for Crypto Miner PSU Repair
The OSG65R099HZ is a high-voltage N-channel MOSFET in a SOT-247 (TO-247) through-hole package, designed for power-supply applications that demand low on-resistance, low switching loss and an ultra-fast, robust body diode. It is one of the primary-side MOSFETs found on crypto miner PSU power factor correction and main switching stages.
With a 650V Vdss rating, 53A drain current and Rds(on) max 0.069Ω (typ 0.06Ω), it delivers stability and uniformity across the full operating temperature range from -45°C to +125°C, supporting the heavy thermal duty of ASIC mining PSUs.
Specifications
| Parameter | Value |
|---|---|
| Part number | OSG65R099HZ |
| Condition | New (original) |
| Type | N-channel MOSFET, high voltage |
| Package | SOT-247 (TO-247) through-hole |
| Vdss | 650V |
| Id | 53A |
| Rds(on) typ | 0.06Ω |
| Rds(on) max | 0.069Ω |
| Body diode | Ultra-fast, robust |
| Operating temperature | -45°C to +125°C |
| Application | PC power, telecom power, server power, EV charger, motor drive, ASIC PSU |
| Lead time | 3 days |
Where the OSG65R099HZ sits in a PSU
Inside an ASIC mining PSU, a 650V N-channel power MOSFET like the OSG65R099HZ is used either as the PFC switching MOSFET (driving the boost inductor downstream of the bridge rectifier) or as a primary-side switch in the main DC-DC stage. Failure typically presents as a blown input fuse, a shorted PFC stage or a dead PSU that cannot start despite a healthy bulk capacitor.
Compatibility
Drop-in replacement for the OSG65R099HZ TO-247 socket on ASIC miner PSU PFC and main switching stages. The same 650V class is shared with other super-junction MOSFETs such as NCE65TF130D — verify pin-out and current rating before substitution. After replacement, inspect upstream driver ICs, gate resistors and freewheeling diodes for collateral damage.
Common failure symptoms
- Input fuse blows immediately on AC connect — PFC MOSFET shorted drain-to-source
- PSU produces no high-voltage bus despite a healthy bridge rectifier and bulk cap
- Burn or visible cracking on the TO-247 case
- Gate driver IC damaged because the gate of the MOSFET shorted
- Main rail comes up but PSU cannot hold full load — Rds(on) degraded after a thermal event
Frequently asked questions
Is the OSG65R099HZ a super-junction MOSFET?
It is a high-voltage 650V N-channel MOSFET with low Rds(on) and ultra-fast robust body diode — characteristics typical of super-junction families used on ASIC PSU PFC stages.
Can I use it on a 600V design?
Yes — the 650V rating gives margin over the 600V class. Ensure the package, pin-out and gate drive levels match the original socket.
What else should I check after a MOSFET failure?
Inspect the gate driver IC, gate-resistor network, sense resistor and the PFC inductor before powering the PSU back on.
Do you stock matching PFC controllers and bridge rectifiers?
Yes — see NCP1654BD65R2G, 3PCS01 and GBU3008 / GBJ2508 in related products.
Related products
- NCE65TF130D 650V 28A Super-Junction MOSFET
- JCS12N65FT 650V 12A N-Channel MOSFET TO-220MF
- WMJ53N65F2 650V N-Channel Super-Junction MOSFET
- NCP1654BD65R2G 54B65 PFC Controller SO8
Contact contact@lys-sz.com for volume pricing or compatibility questions.
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